Compact portable diffraction moire interferometer

Patent · Sun Jan 01 04:00:00 EST 1989

OSTI ID:867049

Deason, Vance A ^[1]; Ward, Michael B ^[2]

---

1. Shelley, ID
2. Idaho Falls, ID

A compact and portable moire interferometer used to determine surface deformations of an object. The improved interferometer is comprised of a laser beam, optical and fiber optics devices coupling the beam to one or more evanescent wave splitters, and collimating lenses directing the split beam at one or more specimen gratings. Observation means including film and video cameras may be used to view and record the resultant fringe patterns.

• Research Organization: EG & G IDAHO INC
• DOE Contract Number: AC07-76ID01570
• Assignee: United States of America as represented by United States (Washington, DC)
• Patent Number(s): US 4850693
• OSTI ID: 867049
• Country of Publication: United States
• Language: English

Related Subjects

/356/
beam
cameras
collimating
collimating lens
collimating lenses
compact
comprised
coupling
deformations
determine
determine surface
devices
devices coupling
diffraction
diffraction moire
directing
evanescent
evanescent wave
fiber
fiber optic
fiber optics
film
fringe
fringe pattern
gratings
improved
including
interferometer
laser
laser beam
lenses
means
means including
moire
moire interferometer
observation
optical
optics
optics devices
patterns
portable
portable diffraction
record
resultant
specimen
specimen gratings
split
split beam
splitters
surface
video
video camera
video cameras
view
wave